Perhaps you should try some spelling variations:
mass transport » gas transport, mass transit, bus transport
transform set » transform test, transform fft, transform std
co wavelet » _ wavelet, 4 wavelet, a wavelet
areas co » areas coal, areas act, areas can
guias de » guia de, guide de, aguas de
de mass » de masse, de mais, de masa
set a » set _, get a
4 ao » 4 aoi, 4 do, 3 ao

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( areas co wavelet transform set a ) OR ( guias de mass transport ((4 ao) OR (4 a)) ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas co wavelet transform set a ) or ( guias de mass transport ((4 ao) OR (4 a)) ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas co wavelet transform set a ) or ( guias de mass transport ((4 ao) OR (4 a)) ))*.